4-(2,2-Dichloro-1,1-difluoroethoxybenzene) sulfonyl chloride and its preparation

Abstract

The compound of this invention is prepared by reacting phenol as such or as its alkali metal phenate with dichlorodifluoroethylene to form 2,2-dichloro-1,1-difluoroethoxybenzene and reacting the latter with chlorosulfonic acid and recovering the reaction product. The compound of this invention, when reacted with acrylonitrile gives the antimicrobial compound, 2-chloro-3-(4-(2,2-dichloro-1,1-difluoroethoxy)phenyl)sulfonyl)propanenitrile.

What is claimed is: 
     
       1. 4-(2,2-Dichloro-1,1-difluoroethoxybenzene)sulfonyl chloride. 
     
     
       2. The method of making 4-(2,2-dichloro-1,1-difluoroethoxybenzene)sulfonyl chloride by mixing together at about 10° C., an excess of phenol as such or as its alkali metal phenate with dichlorodifluoroethylene in the presence of a solvent, recovering the resulting 2,2-dichloro-1,1-difluoroethoxybenzene from the reaction medium and mixing it with excess chlorosulfonic acid at a reaction temperature between about 0° C. and about room temperature and recovering 4-(2,2-dichloro-1,1-difluoroethoxybenzene)sulfonyl chloride from the reaction medium.